The word(s) "warned" appears 16 time(s) in 16 verse(s) in Quran in Saheeh International translation.

(1) [Be warned of] the Day when Allah will assemble the messengers and say, "What was the response you received?" They will say, "We have no knowledge. Indeed, it is You who is Knower of the unseen"

(2) And they denied him, so We saved him and those with him in the ship and made them successors, and We drowned those who denied Our signs. Then see how was the end of those who were warned.

(3) This [Qur'an] is notification for the people that they may be warned thereby and that they may know that He is but one God and that those of understanding will be reminded.

(4) And We send not the messengers except as bringers of good tidings and warners. And those who disbelieve dispute by [using] falsehood to [attempt to] invalidate thereby the truth and have taken My verses, and that of which they are warned, in ridicule.

(5) Say, "I only warn you by revelation." But the deaf do not hear the call when they are warned.

(6) And We rained upon them a rain [of stones], and evil was the rain of those who were warned.

(7) And We rained upon them a rain [of stones], and evil was the rain of those who were warned.

(8) That you may warn a people whose forefathers were not warned, so they are unaware.

(9) Then look how was the end of those who were warned -

(10) But when it descends in their territory, then evil is the morning of those who were warned.